USN.java :  » Media » jems » net » kodeninja » UPnP » identifiers » Java Open Source

package net.kodeninja.UPnP.identifiers;

public class USN extends SSDPIdentifier {
  private URN urn = null;
  private SSDPUUID uuid = null;
  
  public static USN createInstance(String identifier) throws SSDPMalformedIdentifierException {
        if (identifier.startsWith("uuid:") == false)
      throw new SSDPMalformedIdentifierException("Identifier not a USN. Identifier: " + identifier);

    int urnPos = identifier.indexOf(SSDP_SEPERATOR + SSDP_SEPERATOR);
    if (urnPos > 0)
      return new USN(SSDPUUID.createInstance(identifier.substring(0, urnPos)),
          URN.createInstance(identifier.substring(urnPos + 2)));
    else
      return new USN(SSDPUUID.createInstance(identifier));
  }
  
  public USN(SSDPUUID id) {
    this(id, null);
  }
  
  public USN(SSDPUUID uuid, URN urn) {
    this.uuid = uuid;
    this.urn = urn;
  }
  
  public SSDPUUID getUUID() {
    return uuid;
  }
  
  public URN getURN() {
    return urn;
  }
  
  public String toString() {
    if (urn == null)
      return uuid.toString();
    else
      return uuid.toString() + "::" + urn;
  }
  
}